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问题详情

高碳钢淬火后回火时,随回火温度升高其( )。

A、强度硬度下降,塑性韧性提高

B、强度硬度提高,塑性韧性下降

C、强度韧性提高,塑形硬度下降

D、强度韧性下降,塑形硬度提高

时间：2022-04-02 00:22 关键词：大连工业大学机电一体化技术高起专机械制造工艺学 21级2学期期末考试

答案解析

A

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